/*
 * Copyright 2017 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.oschina.durcframework.easymybatis.dao;

import org.apache.ibatis.annotations.Param;

import net.oschina.durcframework.easymybatis.query.expression.Expressional;

public interface UpdateDao<Entity> extends Edit<Entity> {
	/**
	 * 修改,修改所有字段
	 * 
	 * @param entity
	 * @return 受到影响的行数
	 */
	int update(Entity entity);

	/**
	 * 根据主键更新不为null的字段
	 * 
	 * @param entity
	 * @return 受到影响的行数
	 */
	int updateIgnoreNull(Entity entity);

	/**
	 * 根据条件更新不为null的字段
	 * 
	 * @param entity
	 * @param query
	 * @return 受到影响的行数
	 */
	int updateIgnoreNullByExpression(@Param("entity") Entity entity, @Param("query") Expressional expressional);
}
